Process of treating soupled silk and product thereof



Patented May 5, 19225).

UNITED s'ra'rss isaaefia rarsnr 0mm.

CHARLES P. COLE, SEL, 015' EATER-SON, NEW JERSEY.

No Drawing.

. To all whom it may concern:

Be it known that I, Ormnnns P. COLE, Sn, a citizen of the United States, a resident of Paterson, in the county of Passaic and State of New Jersey, have invented a certain new and useful Process of Treating Soupled Silk and Product Thereof, of which the following is a specification. I

This invention relates to a process of treating silk, and more particularly that species of silk known as souple silk, in which process the silkis weighted and woven to form a fabric and is thereafter dyed.

The invention also includes the product of such a process. i l

The invention has as an object the weighting of silk, particularly souple silk, so that it may be dyed in the piece after the weaving operation. Another object of the invention is to weight souple silk with any suitable weighting agent in such a manner as to incorporate the maximum amount of the weighting agent without interfering with the other operationsofthe process. A further object is to weight souple silk before the weaving operation and to thereafter weave it to form piece goods. Further, objects will appear hereinafter.

This invention is an addition to the invention described in the Cole patent, 1,446,834, February 27th, 1923, in which a process of treating silk was described and claimed, wherein the weighting took place before the weaving operation in forming piece goods, and particularly before the throwing operation, when the latter step was employed for certain types of silk goods. v

In the present invention I accomplish the weighting of souple silk before the weaving operation and incorporate the maximum amount of weighting material, while leaving the silk in such a condition that it may be dyed at any timeas desired. After the fabric has been completed by the weaving operation it need not be dyed at once but may be kept in stock until the condition of the market determines what particular colors are to be used in dyeing the silk. In

the aforesaid patent, in the preferred embodiment thereof, a process was described particularly applicable to raw silk in the gum, the silk being known as gum-dyed silk as distinguished fromsouples and brights.

In the preferred embodiment of the present process as applied to souple silk, silk Application filed. March 5, 1923. Serial No. 623,078.

in the raw is cleaned in a soap liquid toremove foreignmatters other than the natural gum of the silk. This liquor may be composed of 600 gallons of water, 30 lbs. green olive oil soap, 5 lbssal soda, 1 gallon ammonia and is used at 28 C. the silk is removed from the bath it is subjected to two washes of soft water of the same temperature as above and it is then subjected to another bath consisting of 600 gallons water and 3 gallons muriatic acid,

this bath being given to remove soap and make the silk receptive to the weighting liquor. After removal the silk is dried in an extractor. y

The weighting; operations are not begun at this point as in the aforesaid patent, but

instead a soupling treatment. is given the silk, which treatment is known in the art and may consist 1n treating it with a boiling cream of tartar or magnesium salt with or without a bleaching step. After'the regular soupling treatment it is washed and acidulated in the usual manner. l

It is now weighted in a bath of tin tetrachloride solution and allowed to remain there for one hourv after which it is ex tracted and washed with cold water. It is now given another extraction and is then placed in a bath containing 609 gallons water and sodium phosphate made up to 4 to 5 Baum. It is treated therein for about one hour and is then removed and washed twice with soft water, after which it is treated with a solution of 600 gallons water. and 3 gallons muriatic acid. After this washing it is again extracted.

The above tin weighting operation may be repeated from one to five times, according to the weight required, and after the conclusion of these treatments, the silk is washed with water, extracted, and then given a sodium phosphate bath in which it remains for one hour. .It is then washed three times with a solution of soft water and sal soda, 600 gal. water, 10 lbs. sal soda, this treatment being followed with a sodium silicate bath, 600 gal. of water, sodium silicate 4 to 5 Baum, in which the silk remains for one hour, after which it is given three more soft water baths and then a bath of soda and ammonia60() gal. of water, 40 lbs. sal soda, 3 gal. ammonia, for onehalf hour. This operation is then followed by another bath consisting of soft water, green olive oil soap; and Bmmonia-600 gal.

of water, 50 lbs. green olive oil soap, 1 gal. ammonia, and the silk is allowed to remain in it for one and onehalf hours after which it is again washed with spring water and muriatic acid, extracted, and dried.

After the silk has been thus weighted it is woven into a fabric preferably without degumming it and is thereafter dyed. The dyeing operation need not be performed at once as it may be carried out whenever an order for a particular shade is received. The degumn'iing step is carried out at the time the goods are dyed. The dyeing step may be omitted for certain goods or a dyeing operation may precede the weaving as desired.

It has been stated that an object of the invention is to weight the silk before weaving it, and the purpose of this is to incorporate any desired weight in the final fabric, and togive the fabric certain characteristics both physical and visual which it would not otherwise have. It is common in the art, however, to give raw silk a few turns before operating upon it in order to handle it better, this condition of the silk being known as tram in the raw, and such a procedure may of course be adopted in the present process also.

As a modification, the warp threads of a so'upled silk fabric may b heavily weighted to provide 25, 50 or 100% weighting of the fabric, or all of the threads may be weighted to provide such weights or above. Tafletas, messelines, wash satins, and piece-dyed goods may be thus prepared.

As many apparently widely different embodiments of my invention may be made without departing fromthe spirit thereof it is to be understood that I do not limit myself to the preferred embodiments except as defined in the claims.

I claim:

1. The process of treating silk comprising soupling and weighting it, and thereafter weaving the silk previous to dyeing it.

The process of treating silk comprising soupling' and weighting it, and thereafter weaving the silk previous to completely de gumming it.

3. The process of treating silk comprising soupling, weighting, weaving, completely degumming and dyeing it, in the order named.

l. The process of treating silk comprising soupling and weighting it before completely removing the gum, weaving it, and then dyeing it.

5. The process of treating silk comprising cleaning it in a soap liquor, washing it with water, soupling the silk and weighting it, and then weaving to form a fabric.

6. An undyed soupled' silk fabric which contains over 25% of weighting material.

7. An undyed soupled' silk fabric which contains over 50% of weighting material.

8. An undyed soupled silk fabric which contains over 100% weighting material.

9. A soupled silk fabric whose warp threads are heavily weighted.

In testimony that I claim the foregoing, I have hereunto set my hand this day of March, 1923.

CHARLES P. COLE, SR.- 

